supply of miscellaneous electrical items for 132 / 33kv central substation and 33 / 3 . 3kv gpt sub station , item description , gi earthing clamp 35 sq . mm , gi earthing clamp 50 sq . mm , gi earthing clamp 70 sq . mm , gi earthing clamp 90 sq . mm , gi earthing clamp 120 sq . mm , numerical protection relay with four element ( 3 phase + ef ) over current idmt with instant trip display to falut / load current with breaker fail , trip circuit supervision function programmable annunciation contact , seperate curve selection for pahse & ef latching of fault current upto last five fault with site selectable ct secondary and six selectable curves ( normal inverse1 , normal inverse2 , very inverse , extremely inverse , long time inverse , and definite time , contactor 4 pole 25 amp standard voltage 110v with superior weld resistance contacts , rugged and heavy duty high grade moudling for extremly long life . enclapsulated coil shock proof and moisture proof withstand large voltage fluctuations , 33kv vcb al clamp for suitable zebra conductor ( 800 amp ) with gi nut & bolt & washer , contactor 4 pole 16 amp standard voltage 110v with superior weld resistance contacts , rugged and heavy duty high grade moudling for extremly long life . enclapsulated coil shock proof and moisture proof withstand large voltage fluctuations , 33kv vcb al clamp for suitable panther conductor ( 400 amp ) with gi nut & bolt & washer , 33kv vcb al clamp for rabbit conductor with gi nut & bolt & washer , aluminium connector ( 4 bolt & nut ) straight type 33kv isolator alu pad clamp suitable for dog cinductor ( 21mm ) to connect with alu . flat pad with gi nut & bolts & plain & spring 4 bolted type current carrying capacity 800a , pt 33kv / 11v oil type out door unit potential transformer , 33 kv / 110v oil immersed , va vurden-30va , accuracy class-0 . 5 , power frequency with stand voltage -70 kv rms , lighting impulse with stand voltage-170kv peak confirming to is:3156 / 1992 , ct 33kv , 100-50 / 5 / 5 , stc-13 . 1ka current transformer , 33 kv / 110v grade , out door type , oil immersed , ratio 100-50 / 5-5-5a , accuracy class-0 . 5 , va burden-10va power frequency with stand voltage -70 kv rms , lighting impulse with stand voltage-170kv peak confirming to is:2705 / 1992 , al ct clamp 132kv d . ended t clamp for panther acsr conductor with g . i . nut & bolts washer ( 14mm dia x70mm ) 400 amp , 33 kv ct al pad clamp with ct stud 21 mm with g . i . nut & bolts washer , 500 amp , 33 kv ct al pad clamp suitable for panther conductor 21mm with g . i . nut & bolts washer ( 8mm dia x 56mm ) 800 amp , aluminium connector ( 8 bolt & nut ) t type 33kv isolator alu flat pad clamp suitable for panther conductor ( 21mm ) to connect with alu flat pad size of 76x76x17 . 2mm with gi nut bolts and plain & spring washer ( 11mm dia x 56mm ) 8 bolted type current carrying capacity-500a , alu . pad clamp zebra acsr con . 33kv isolator alu pad clamp suitable for zebra conductor ( 29mm ) to connect with alu flat pad size of 85x85x18mm with gi nut bolts and plain & spring washer ( 10mm dia x 50mm ) 8 bolted type current carrying capacity-800a , 33 kv ct al pad clamp suitable for zebra conductor 29mm with g . i . nut & bolts washer ( 8mm dia x 56mm ) 800 amp l type cu & bimettalic clamp , copper lugs 150 sq . mm , copper lugs 120 sq . mm , copper lugs 95 sq . mm , copper lugs 50 sq . mm , copper lugs 35 sq . mm , copper lugs 70 sq . mm , earth tester 0-1000mohms digital earth clamp tester jaw range 0 . 01 to 1000 ohms , digital power ac meter 750v 1000amp , timer switch 220v